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authorChander Kashyap <chander.kashyap@linaro.org>2013-06-18 19:29:35 +0400
committerKukjin Kim <kgene.kim@samsung.com>2013-06-18 23:09:35 +0400
commit7114cd749a12ff9fd64a2f6f04919760f45ab183 (patch)
tree981442063bc1e979a057fb16878221227d7bdb4a /drivers/clocksource
parent34dcedfbf97bc1c91c20f341e4ff4f70e53a0644 (diff)
downloadlinux-7114cd749a12ff9fd64a2f6f04919760f45ab183.tar.xz
clocksource: exynos_mct: use (request/free)_irq calls for local timer registration
Replace the (setup/remove)_irq calls for local timer registration with (request/free)_irq calls. This generalizes the local timer registration API. Suggested by Mark Rutland. Signed-off-by: Chander Kashyap <chander.kashyap@linaro.org> Acked-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Diffstat (limited to 'drivers/clocksource')
-rw-r--r--drivers/clocksource/exynos_mct.c35
1 files changed, 9 insertions, 26 deletions
diff --git a/drivers/clocksource/exynos_mct.c b/drivers/clocksource/exynos_mct.c
index 662fcc065821..a70480409ea5 100644
--- a/drivers/clocksource/exynos_mct.c
+++ b/drivers/clocksource/exynos_mct.c
@@ -400,18 +400,6 @@ static irqreturn_t exynos4_mct_tick_isr(int irq, void *dev_id)
return IRQ_HANDLED;
}
-static struct irqaction mct_tick0_event_irq = {
- .name = "mct_tick0_irq",
- .flags = IRQF_TIMER | IRQF_NOBALANCING,
- .handler = exynos4_mct_tick_isr,
-};
-
-static struct irqaction mct_tick1_event_irq = {
- .name = "mct_tick1_irq",
- .flags = IRQF_TIMER | IRQF_NOBALANCING,
- .handler = exynos4_mct_tick_isr,
-};
-
static int __cpuinit exynos4_local_timer_setup(struct clock_event_device *evt)
{
struct mct_clock_event_device *mevt;
@@ -435,16 +423,15 @@ static int __cpuinit exynos4_local_timer_setup(struct clock_event_device *evt)
exynos4_mct_write(TICK_BASE_CNT, mevt->base + MCT_L_TCNTB_OFFSET);
if (mct_int_type == MCT_INT_SPI) {
- if (cpu == 0) {
- mct_tick0_event_irq.dev_id = mevt;
- evt->irq = mct_irqs[MCT_L0_IRQ];
- setup_irq(evt->irq, &mct_tick0_event_irq);
- } else {
- mct_tick1_event_irq.dev_id = mevt;
- evt->irq = mct_irqs[MCT_L1_IRQ];
- setup_irq(evt->irq, &mct_tick1_event_irq);
- irq_set_affinity(evt->irq, cpumask_of(1));
+ evt->irq = mct_irqs[MCT_L0_IRQ + cpu];
+ if (request_irq(evt->irq, exynos4_mct_tick_isr,
+ IRQF_TIMER | IRQF_NOBALANCING,
+ evt->name, mevt)) {
+ pr_err("exynos-mct: cannot register IRQ %d\n",
+ evt->irq);
+ return -EIO;
}
+ irq_set_affinity(evt->irq, cpumask_of(cpu));
} else {
enable_percpu_irq(mct_irqs[MCT_L0_IRQ], 0);
}
@@ -454,13 +441,9 @@ static int __cpuinit exynos4_local_timer_setup(struct clock_event_device *evt)
static void exynos4_local_timer_stop(struct clock_event_device *evt)
{
- unsigned int cpu = smp_processor_id();
evt->set_mode(CLOCK_EVT_MODE_UNUSED, evt);
if (mct_int_type == MCT_INT_SPI)
- if (cpu == 0)
- remove_irq(evt->irq, &mct_tick0_event_irq);
- else
- remove_irq(evt->irq, &mct_tick1_event_irq);
+ free_irq(evt->irq, this_cpu_ptr(&percpu_mct_tick));
else
disable_percpu_irq(mct_irqs[MCT_L0_IRQ]);
}